A single current carrying loop of wire carrying current flowing in anticlockwise direction seen from +ve direction and lying in plane as shown in figure. [2023]

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Solution

Q.
A single current carrying loop of wire carrying current $I$ flowing in anticlockwise direction seen from +ve $z$ direction and lying in $x y$ plane as shown in figure. The plot of $\hat{j}$ component of magnetic field $(B_{y})$ at a distance $' a'$ (less than radius of the coil) and on $y z$ plane vs $z$ coordinate looks like [2023]

1

2

3

4

Ans.
(3)

$B_{y} = 0 in the plane of the coil$

$B_{y} is opposite to each other at - z and + z positions.$

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